Dynamic analysis of an offshore pipe laying operation using the reel method

Abstract

A system designed for a rigid and flexible pipe laying purposes is presented in the paper. Mathematical and numerical models are developed by using the rigid finite element method (RFEM). The RFEM is an efficient solution in the time domain. Static and dynamic problems related to pipe installation are solved by taking the advantage of simple interpretation and implementation of the method. Large deformations of the pipe during spooling and when it is reeled out at sea are considered. A material model implemented is used to take into consideration nonlinear material properties. In particular, the full elasto-plastic material characteristics with hardening and Bauschinger effect are included. Dynamic analyses are performed and the results attached in this work demonstrates how the sea conditions influence the machinery and pipeline, assuming a passive reel drive system. The influence of several other operational parameters on dynamic loads is verified. An active system, implemented as a part of the mathematical model, improves the system performance. Some results are presented as well.

Effectiveness of the segment method in absolute and joint coordinates when modelling risers

“…The procedure for calculation of moments (vectors M i ) acting on segments i − 1 and i is different from the approaches used in previous papers [52][53][54] and [58][59][60].…”

“…RFEM formulated in joint coordinates is also applied by Szczotka [52][53][54][55] for dynamic analysis of offshore pipeline installations with special emphasis on the following installation techniques: S-lay, J-lay and reel lay.…”

Mathematical Modelling of Bonded Marine Hoses for Single Point Mooring (SPM) Systems, with Catenary Anchor Leg Mooring (CALM) Buoy Application—A Review

“…Notable HMs have been considered in recent studies as reported in Amaechi [110][111][112][113][114], and Tonatto [115][116][117][118][119] which considered the statics and dynamics of hoses in separate presentations. In the study by Szczotka [120], an HM was presented with a numerical model developed using a rigid finite element model (RFEM) for the static and dynamic reeling operation in pipe-laying. The study showed that by using this model, active and passive tensioner reels could be studied and the reeling installation of pipelines in sea conditions could be simulated well, as validated via a pipe laying simulation with an active reel drive.…”

Mechanical behavior of metallic strip flexible pipes during reeling operation

“…With considerable attention has been paid to the security and reliability of flexible structures in the installation and operation phases [15][16][17][18][19], research on their mechanical behavior during early reeling operation rarely shows in the open literature according to our review, although some similar study regarding reel-laying manipulation might provide some references. Szczotka [20] adopted the rigid finite element method to present the static and dynamic response of an offshore pipe reel-laying process. The failure phenomenon has also been observed in reel-laying manipulation.…”